Copenhagen: Tempers flared Monday at the United Nations climate summit as poor nations staged a walkout to protest what they called inadequate aid offers from rich countries, and the U.S. and China jockeyed for position.…

Nearly in a near-panic. Wikipedia:Â Oceanic anoxic events or anoxic events occur when the Earth’s oceans become completely depleted of oxygen (O2) below the surface levels. Although anoxic events have not happened for millions of years,…